MA46H120

Overview

The MA46H120 is a gallium arsenide flip-chip hyperabrupt varactor diode designed for high device uniformity and extremely low parasitics. Fabricated on OMCVD epitaxial wafers, the component features silicon nitride passivation and polyimide scratch protection to prevent junction damage during handling. It operates within a temperature range of -40°C to +125°C with a maximum power dissipation of 100 mW. Electrical specifications include a minimum breakdown voltage of 20 V at 10 µA reverse current and a maximum reverse leakage current of 100 nA at 14 V. The device maintains a constant gamma of 1.00 ±10% from 2 to 12 volts.

Feature Summary

• Constant Gamma characteristic enables linear tuning applications
• Flip-chip configuration supports automated pick-and-place insertion
• Polyimide coating provides scratch protection for the junction

Applications

• Linear tuning circuits requiring consistent capacitance-voltage characteristics
• High-frequency variable capacitance applications utilizing GaAs technology
• Automated surface mount assembly processes

Procurement Notes

Verify the specific package variant required for production, as the series includes Gel Pack (MA46H120), Waffle Pack (MAVR-000120-12030W), and Whole Wafer options. Confirm that the operating environment remains within the specified -40°C to +125°C range to ensure reliability. Ensure mounting temperatures do not exceed +235°C for more than 10 seconds during soldering processes to avoid permanent damage to the device structure.

Selection Notes

Select this component when linear tuning performance is critical due to its constant gamma specification across the 2 to 12 volt range. The flip-chip format is suitable for designs prioritizing low parasitic inductance and capacitance. Consider the robust protective coatings if the manufacturing process involves manual handling or requires high resistance to physical abrasion during assembly.

Part Context

This part belongs to the MA46H120 Series of gallium arsenide varactor diodes manufactured by M/A-COM Technology Solutions. The series utilizes OMCVD epitaxial wafers to achieve high uniformity. It is distinct from standard planar varactors by its flip-chip architecture and specialized protective layers, targeting applications demanding precise capacitance control and durability in RF environments.

Replacement Considerations

The SCP-5760 and SCP-5761 from Sensitron are listed as similar parts offering GaAs constant gamma hyperabrupt varactor functionality. Verify pin compatibility and electrical tolerances before substitution.